PHP's json_encode does not escape all JSON control characters

Question

Is there any reasons why PHP\'s json_encode function does not escape all JSON control characters in a string?

For example let\'s take a string which spans two rows a

Answer 1

$search = array("\n", "\r", "\u", "\t", "\f", "\b", "/", '"');
$replace = array("\\n", "\\r", "\\u", "\\t", "\\f", "\\b", "\/", "\"");
$encoded_string = str_replace($search, $replace, $json);

This is the correct way